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Subject[PATCH 02/15] ATA : vortex86 : fix vortex86dx/sx hardware CRC bug.
Date
This fixes a DMA issue related to a CRC bug on
the RDC pata peripherial found on the vortex86sx and vortex86dx.

Signed-off-by: Paul Schilling <paul.s.schilling@gmail.com>
---
drivers/ata/pata_it821x.c | 14 ++++++++++----
drivers/ata/pata_rdc.c | 29 ++++++++++++++++++++++++-----
drivers/ide/it821x.c | 9 +++++++--
include/linux/pci_ids.h | 2 ++
4 files changed, 43 insertions(+), 11 deletions(-)

diff --git a/drivers/ata/pata_it821x.c b/drivers/ata/pata_it821x.c
index c5532b9..72c91f2 100644
--- a/drivers/ata/pata_it821x.c
+++ b/drivers/ata/pata_it821x.c
@@ -897,7 +897,8 @@ static int it821x_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
static const struct ata_port_info info_rdc_11 = {
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = ATA_PIO4,
- .mwdma_mask = ATA_MWDMA2,
+ .mwdma_mask = 0,
+ .udma_mask = 0,
/* No UDMA */
.port_ops = &it821x_rdc_port_ops
};
@@ -911,11 +912,16 @@ static int it821x_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
return rc;

if (pdev->vendor == PCI_VENDOR_ID_RDC) {
- /* Deal with Vortex86SX */
- if (pdev->revision == 0x11)
+ if (((pdev->revision == 0x11) || (pdev->revision == 0x13)) &&
+ (pdev->device == PCI_DEVICE_ID_RDC_D1010)) {
+ /* Deal with Vortex86SX */
ppi[0] = &info_rdc_11;
- else
+ printk(KERN_INFO DRV_NAME
+ ": Detected Vortex86SX/DX Bug.\n");
+ printk(KERN_INFO DRV_NAME ": Disabling UDMA.\n");
+ } else {
ppi[0] = &info_rdc;
+ }
} else {
/* Force the card into bypass mode if so requested */
if (it8212_noraid) {
diff --git a/drivers/ata/pata_rdc.c b/drivers/ata/pata_rdc.c
index 2b38127..441521c 100644
--- a/drivers/ata/pata_rdc.c
+++ b/drivers/ata/pata_rdc.c
@@ -290,6 +290,16 @@ static struct ata_port_info rdc_port_info = {
.port_ops = &rdc_pata_ops,
};

+static struct ata_port_info vortex_port_info = {
+ .flags = ATA_FLAG_SLAVE_POSS,
+ .pio_mask = ATA_PIO4,
+ .mwdma_mask = 0,
+ .udma_mask = 0,
+ /* No UDMA */
+ .port_ops = &rdc_pata_ops,
+};
+
+
static struct scsi_host_template rdc_sht = {
ATA_BMDMA_SHT(DRV_NAME),
};
@@ -322,16 +332,25 @@ static int __devinit rdc_init_one(struct pci_dev *pdev,

ata_print_version_once(&pdev->dev, DRV_VERSION);

- port_info[0] = rdc_port_info;
- port_info[1] = rdc_port_info;
-
- port_flags = port_info[0].flags;
-
/* enable device and prepare host */
rc = pcim_enable_device(pdev);
if (rc)
return rc;

+ if ((pdev->revision == 0x01) &&
+ (pdev->device == PCI_DEVICE_ID_RDC_D1011)) {
+ /* Deal with Vortex86DX */
+ port_info[0] = vortex_port_info;
+ port_info[1] = vortex_port_info;
+ printk(KERN_INFO DRV_NAME ": Detected Vortex86DX Bug.\n");
+ printk(KERN_INFO DRV_NAME ": Disabling UDMA.\n");
+ } else {
+ port_info[0] = rdc_port_info;
+ port_info[1] = rdc_port_info;
+ }
+
+ port_flags = port_info[0].flags;
+
hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
if (!hpriv)
return -ENOMEM;
diff --git a/drivers/ide/it821x.c b/drivers/ide/it821x.c
index 2e3169f..82c6bc7 100644
--- a/drivers/ide/it821x.c
+++ b/drivers/ide/it821x.c
@@ -581,10 +581,14 @@ static void __devinit init_hwif_it821x(ide_hwif_t *hwif)
hwif->ultra_mask = ATA_UDMA6;
hwif->mwdma_mask = ATA_MWDMA2;

- /* Vortex86SX quirk: prevent Ultra-DMA mode to fix BadCRC issue */
+ /* Vortex86SX and Vortex86DX quirk: prevent
+ * Ultra-DMA mode to fix BadCRC issue when
+ * using DMA mode */
if (idev->quirks & QUIRK_VORTEX86) {
- if (dev->revision == 0x11)
+ if (((dev->revision == 0x11) || (dev->revision == 0x13))
+ || (dev->revision == 0x01)) {
hwif->ultra_mask = 0;
+ }
}
}

@@ -680,6 +684,7 @@ static const struct pci_device_id it821x_pci_tbl[] = {
{ PCI_VDEVICE(ITE, PCI_DEVICE_ID_ITE_8211), 0 },
{ PCI_VDEVICE(ITE, PCI_DEVICE_ID_ITE_8212), 0 },
{ PCI_VDEVICE(RDC, PCI_DEVICE_ID_RDC_D1010), QUIRK_VORTEX86 },
+ { PCI_VDEVICE(RDC, PCI_DEVICE_ID_RDC_D1011), QUIRK_VORTEX86 },
{ 0, },
};

diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index ae96bbe..237da92 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -2259,6 +2259,8 @@
#define PCI_DEVICE_ID_RDC_R6060 0x6060
#define PCI_DEVICE_ID_RDC_R6061 0x6061
#define PCI_DEVICE_ID_RDC_D1010 0x1010
+#define PCI_DEVICE_ID_RDC_D1011 0x1011
+#define PCI_DEVICE_ID_RDC_D1012 0x1012

#define PCI_VENDOR_ID_LENOVO 0x17aa

--
1.7.6.4


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